Abstract

We report experimental electromodulation results on various sized CdS_xSe_1-x nanocrystals doped in a glass matrix. The samples were made by heat treatment and annealing of as-received filter glass from Schott. The size of the nanocrystals can be controlled from 40 to 200Å in diameter by annealing time. Transmission electron microscopy and absorption measurements were performed to get the size and volume fraction of semiconductor nanocrystals in the sample. Raman experiments indicated that the samples are CdS_0.44Se_0.56 and that the composition does not change with nanocrystal size. Electromodulation experiments were performed, and two strong peaks from the quantum-confined excitons were observed.

© 1991 Optical Society of America